BOM ( byte order mark ) issue

Hi Guys,

  Here's the summary of the situation I'm facing.

  I've got a simple file transfer scenario where I'm transferring files  after encrypting  them using PIs B2B PGP addon. It's working fine but the application on the receiving end expects  a BOM ( byte order mark ) in the file which is not put by the sending system. As I'm not doing content conversion, is there an easy way to  add BOM information ? 

  Essentially my problem boils down to - is it possible to manipulate files  being passed via PI without necessarily converting them to XML first?

It looks too much work to do content conversion just to add BOM and I'll really like to avoid manipulating the file via a script etc. before it's processed by PI .

Thanks,

Vikas